DEFORMED STATE MONITORING DEVICE

PROBLEM TO BE SOLVED: To provide a deformed state monitoring device capable of detecting a deformed state of an inner member of a vehicle body, while suppressing cost increase and reducing burdens on workers.SOLUTION: The deformed state monitoring device includes a contact switch 2 which is turned ON when an external force is exerted on a shock absorbing member and is turned OFF when the external force is not exerted on the shock absorbing member, a fuse 5 which is permanently switched from a non-detection state to a detection state once the contact switch 2 is turned ON, and a cut-off detection circuit 6 sensing that the shock absorbing member 12 is in the deformed state when the fuse 5 is in the detection state. The contact switch 2 and the fuse 5 are always series-connected to a battery 3.